See my previous reply (and previous of previous ...). Include the alias prefix:

(?m.tDateTime
not
(?tDateTime

PS: Wait a min. You're calling another procedure to execute the command. Do the varables are still in scope there???
Cetin

>Here is the code for the entire function. All paramter variables being passed
>to SQL contained values when I ran it.
>
>

>PROCEDURE HandleError(sAppName AS String, iErrNo AS Integer,;
>                      sErrMessage AS String, sLineOfCode AS String,;
>	              sProgram AS String, iLineNo AS int, sStack AS String)
>	
>  LOCAL iRetVal, sDateTime, sErrNo, sLineNo, sUserId, sMemory, sStatus
>  LOCAL sSqlCommand
>
>  iRetVal = TRUE
>
>  WITH This
>		
>    ** Setup the connection
>    IF .Setup()
>
>      tDateTime = DATETIME()
>      sUserId   = UPPER(ALLTRIM(SUBSTR(SYS(0), AT("#", SYS(0))+1)))
>
>      TEXT TO sSqlCommand NOSHOW
>
>        insert into syserrors
>	  (datetime, error, line, message, codeline, program,
>	   [user], appname)
>	values
>	  (?tDateTime, ?iErrNo , ?iLineNo, ?sErrMessage, ?sLineOfCode,
>           ?sProgram, ?sUserId, ?sAppName)
>
>      ENDTEXT
>
>      ** Run the insert command
>      ._oSQLProcs.SQLCommand(sSqlCommand)
>
>      ** Check for and handle any errors that occured
>      ._CheckForSQLError()
>
>    ENDIF
>		
>  ENDWITH
>	
>RETURN
>	
>ENDPROC
>
>

>
>
>
>>Are you sure? I didn't see all in code. It asks for those missing only. Please do not forget to prefix with m. or alias,object name (if from a cursor, object).
>>Cetin
>>
>>>All variables are filled in already. I'm getting prompted for
>>>parameter values.
>>>
>>>
>>>>Great they already are coming as parameters:)
>>>>Fill in those that aren't passed as parameters before call to SQLExec().
>>>>

>>>>PROCEDURE HandleError(sAppName AS String, iErrNo AS Integer,;
>>>>                      sErrMessage AS String, sLineOfCode AS String,;
>>>>	              sProgram AS String, iLineNo AS int, sStack AS String)
>>>>TEXT TO sSqlCommand NOSHOW
>>>>  insert into syserrors
>>>>  (datetime, error, line, message, codeline, program,
>>>>  [user], appname, memory, status, callstack)
>>>>  values
>>>>  (?m.tDateTime, ?m.iErrNo , ?m.iLineNo, ?m.sErrMessage, ?m.sLineOfCode, ?m.sProgram,
>>>>   ?m.sUserId, ?m.sAppName, ?sMemory, ?sStatus, ?sStack)
>>>>ENDTEXT
>>>>tDateTime = datetime() && Any valid VFP date/datetime expression
>>>>sUserId = 'whoever'
>>>>sMemory = 'whatever'
>>>>sStatus = 'yourstatus'
>>>>SQLExec(...)
>>>>

Cetin